Lochinvar Amicus Guide

Amicus
Air to Water Heat Pumps
Installation, commissioning, user
and maintenance instructions
Installation manual_LAHP252-5004LT_March 2021
READ AND UNDERSTAND THE
INSTRUCTIONS
Read and fully understand all instructions
before attempting to operate maintain or
install the unit.
Models:
LAHP-252LT to LAHP-5004LT

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1. CONTENTS
1INTRODUCTION .................................................................................................................................................................. 5
2. SAFETY ...................................................................................................................................................................... 10
Refrigerant handling............................................................................................................................................ 10
Prevent inhalation of high vapourconcentration.................................................................................................. 11
Procedures to be adopted in the event of accidental release of refrigerant ............................................................ 11
Main Toxicological Information Regarding the Type of refrigerant used................................................................. 11
First Aid Measures............................................................................................................................................... 11
3. TECHNICAL CHARACTERISTICS........................................................................................................................................... 12
Accessories description....................................................................................................................................... 13
4. TECHNICAL DATA.............................................................................................................................................................. 15
Operational limits ............................................................................................................................................... 16
Domestic hot water production........................................................................................................................... 18
Correction tables................................................................................................................................................. 19
Sound data ......................................................................................................................................................... 20
5. INSTALLATION .................................................................................................................................................................. 21
General safety guidelines and use of symbols....................................................................................................... 21
Personal protective equipment ........................................................................................................................... 21
Inspection........................................................................................................................................................... 22
Storage ............................................................................................................................................................... 22
Unpacking........................................................................................................................................................... 22
Lifting and handling............................................................................................................................................. 22
Location and minimum technicalclearances ........................................................................................................ 24
Installation of rubber vibration dampers (KAVG).................................................................................................. 27
Serial interface card RS485(INSE) ........................................................................................................................ 27
Installation of condensate drip tray(BRCA) .......................................................................................................... 28
Hydraulic connections......................................................................................................................................... 29
Chemical characteristics of thewater.................................................................................................................. 29
Hydraulic components ........................................................................................................................................ 30
User circuit minimum watercontent.................................................................................................................... 31
Minimum domestic hot water circuitcontent....................................................................................................... 31
Filling the hydraulic circuit................................................................................................................................... 31
Emptying the installation..................................................................................................................................... 31
Typical installations............................................................................................................................................. 32
Electric connections: preliminary safetyinformation............................................................................................ 34
Electric data........................................................................................................................................................ 35
Electric connections ............................................................................................................................................ 37
USER CIRCUIT WATER INLET SENSOR (BTI)........................................................................................................... 37
USER CIRCUIT WATER PUMP ............................................................................................................................... 37
DOMESTIC HOT WATER SENSOR (BTS)................................................................................................................. 37
PRIORITY SELECTOR (Hot water).......................................................................................................................... 39
Positioning of the user circuit water inlet sensor (BTI)........................................................................................... 40
Correct positioning of the BTI sensor................................................................................................................... 40
Positioning of the domestic hot water circuit sensor (BTS) .................................................................................... 40
Refrigerant circuit layout..................................................................................................................................... 41
6. UNIT START UP ................................................................................................................................................................. 43
Preliminary checks .............................................................................................................................................. 43
Before start-up.................................................................................................................................................... 43
Device Set-point DifferentialReset ...................................................................................................................... 44
Controls during unit operation............................................................................................................................. 44
Position of the controlpanel................................................................................................................................ 45
To remote the control.......................................................................................................................................... 47
Switch the unit on ............................................................................................................................................... 48
Switch the unit on from digital input.................................................................................................................... 49
Stop.................................................................................................................................................................... 49
Set point ............................................................................................................................................................. 50

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PROBES key......................................................................................................................................................... 51
ALARM key.......................................................................................................................................................... 51
CIRC key.............................................................................................................................................................. 52
SERVICE key ........................................................................................................................................................ 54
Weather compensated function.......................................................................................................................... 57
Setting date and time.......................................................................................................................................... 58
Compressor maintenance.................................................................................................................................... 59
Circuit maintenance ............................................................................................................................................ 59
Alarms ................................................................................................................................................................ 60
Defrost ............................................................................................................................................................... 60
Electrical heater.................................................................................................................................................. 62
I/O Status (Input/Output).................................................................................................................................... 62
Screw compressor (If available) ........................................................................................................................... 63
Auxiliary output .................................................................................................................................................. 63
Sanitary water..................................................................................................................................................... 64
Upload / download ............................................................................................................................................. 64
Control panel ...................................................................................................................................................... 64
6.8 Acoustic signal silencing ................................................................................................................................ 64
7. MAINTENANCE OF THE UNIT............................................................................................................................................. 65
Periodical checks................................................................................................................................................. 66
8. DECOMMISSIONING ......................................................................................................................................................... 67
Disconnecttheunit ................................................................................................................................................... 67
Disposal, recovery andrecycling .......................................................................................................................... 67
RAEE Directive (EU Only)..................................................................................................................................... 67
9. DIAGNOSIS ANDTROUBLESHOOTING................................................................................................................................ 68
Fault finding........................................................................................................................................................ 68

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1 INTRODUCTION
Preliminary information
Reproduction, storage or transmission of any part of this publication inany form, without the prior written consent of Lochinvar, is pro hibited.
The unit to which these instructions refer, is designed to be used for the purposes described and to be operated in accordance with these
instructions.
Lochinvar will not beliable for claims for damage caused topersons, animals, material goods or property caused by improperinstalla tion,
adjustment and maintenance or improper use.Any use not specified in this manual is prohibited.
This document isintendedto provideinformation only anddoes not form a contractwiththird parties.
Lochinvar pursues a policy of constant improvement and development of its products and therefore reserves the right to change the specifications and
the documentation at any time, without notice and without obligation toupdate existing equipment.
Aim and content of themanual
These instructions are intended to provide the information required for the selection, installation, use and maintenance of t he unit. They
havebeen preparedinaccordancewiththeEuropeanUnionlaws and withthetechnical standardsin forceatthedate ofissueofthe instructions.
The instructions contain all the necessary information to prevent any reasonably foreseeable misuse.
How to store thismanual
The manual must be kept in a suitable place with easy access for users and operators, protected from dust and damp.
The manual must always accompany the unit during the entire life cycle of the same and therefore must be transferred to any subsequent
user.
Manual Update
Itis recommended that the manual is updatedtothe latest revision
available. Ifupdates aresenttothe customer they must beaddedto
thismanual.
The latest information regarding the use of its products is available by contacting Lochinvar.
How to use thismanual
The manual is an integral part of the unit.
Users or operators must consult the manual before performing any operation and especially so when transporting,
han dling, installation, maintaining, or dismantlingthe unit inorder toeliminate uncertainty and reducerisk.
In these instructions symbols have been used (described inthe following paragraphs) to draw the attention of operators
and users to the operations that have a higher risk and which must be performed safely.

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Potential Risks
Whilst the unit has been designed tominimize any risk posed to the safety of people who will interact with it, it has not beentechnically
possibletoeliminatecompletely thecausesof risk Itisthereforenecessarytorefertotherequirementsandsymbolismbelow:
LOCATION OF RISK
POTENTIAL RISK
METHOD OF INJURY
PRECAUTIONS
Thermal heat
exchangers
Small stab wounds
Contact
Avoid any contact use protective gloves
Fan and fan grilles.
Cuts, eye damage,
broken bones.
Insertion of sharp
objects through the grid
while the fans are
operating.
Never put objects through the protection grilles.
Internal components
compressors and grills
Burns
Contact
Avoid any contact use protective gloves
Internal component:
electric cables and
metallic parts
Electrocution, severe
burns.
Defect in the supply
cable insulation, live
metallic parts.
Adequate protection of power cables, ensure correct
earthing of all metal parts.
External to unit,
enclosure
Poisoning and severe
burns
Fire due to short circuit
or overheating of the
supply cable to the unit
Size cables and main protection systems in
accordance with IEE regulations
Low pressure safety
valve.
Poisoning,
Severe burns.
High evaporating pressure causing a refrigerant
discharge during maintenance. Carefully check the
evaporating pressure during the maintenance
operations.
High pressure safety
valve
Poisoning and severe
burns, hearing loss
Activation of the high
pressure safety valve
with the refrigerant
circuit open
If possible do not open the refrigerant circuit valve,
carefully check the condensing circuit pressure, use
all protective equipment as required by law
Entire unit
External fire
Fire due to natural
disasters or
combustions of
elements nearby unit
Provide the necessary fire-fighting equipment
Entire unit
Explosions, injuries
burns
Breakages due to
natural disasters or
earthquake
Take all necessary precautions as required by law
applicable to the installation site

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General Description of SymbolsUsed
SafetysymbolscombinedinaccordancewithISO3864-2:
SafetysymbolscombinedinaccordancewithISO3864-2:

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Safety symbols used
GENERAL RISK
Observe all signs placed next to the pictogram.The failure to follow directions may create a risk situation that may be
injurious to theuser.
ELECTRICAL HAZARD
Observe all signs placed next to the pictogram.
The symbol indicates components of the unit and actions described in this manual that could create an electrical
hazard.
MOVING PARTS
The symbol indicates those moving parts of the unit that could create risk.
HOT SURFACES
The symbol indicates those components with high surface temperature that could create risks.
SHARP SURFACES
The symbol indicates components or parts that could cause stab wounds.
EARTH CONNECTION
The symbol identifies Earthing connection points in the unit.
READ AND UNDERSTAND THE INSTRUCTIONS
Read and understand the instructions of the machine before any operations.
RECOVER OR RECYCLE MATERIAL
Limitations and prohibiteduse
The machineis designed and built exclusively for the uses described in“Limitations of use” of the technical manual. Any otheruseisprohibited
because it may pose a potentialrisk to the health of operators and users.
The unit is not suitable for operations in environments:
• excessively dusty or potentially explosive atmospheres;
• where there are vibrations;
• where there are electromagneticfields;
• where there are aggressiveatmospheres

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Unit identification
Each unit has a rating platethat provideskeyinformation regarding the machine. Therating plate may differ from the one shown below asthe example is
for a standard unit without accessories. For all electrical information not provided on the label, refer to the wiring diagram.
A facsimile of the label is shown below:
The product label should never be removed from the unit.

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2. SAFETY
Warningrepotentiallyhazardoustoxicsubstances
Identification of the Typeof Refrigerant Fluid Used: R410A
• Difluoromethane (HFC-32) 50% by weight CAS No.: 000075-10-5
• Pentafluoroethane (HFC-125) 50% by weight CAS No.: 000354-33-6
Identification of the Type of OilUsed.
The lubricant used is polyester oil. Please refer to the information provided on the compressor data plate.
Main Ecological Information Regarding the Types of refrigerants Fluids used.
Persistence and degradation
Therefrigerants useddecomposeintheloweratmosphere (troposphere)relativelyquickly.Thedecomposedproducts arehighly dispersible
and therefore have a very low concentration. They do not influence the photochemical smog which is not among the VOC volatile organic
compounds (as stipulated inthe guidelines totheUNECE). The constituent refrigerants of R407C (R32, R125 and R134a), donot damage the
ozone layer. These substances are regulated under theMontreal Protocol (revised1992) and regulations ECno. 2037/200 of 29June 2000.
Effects of discharges
Discharges into the atmosphere of this product does not cause a long-term contamination.
Exposure controls and personalprotection
Wear protective clothing and gloves, protect your eyes and face
Professional exposure limits
R410A
HFC-32 TWA1000ppm
HFC-125 TWA1000ppm
R EFRIGERANT HANDLING
For further information regarding the characteristics of the refrigerant and oil used, refer to the safety data sheets
available from the refrigerant and oil manufacturers.
ENVIRONMENTAL PROTECTION: Read the ecological information and the following instructions carefully.
Users and maintenance personnel must be adequately informed about the possible risks of handling potentially toxic
substances. Failure to follow such instructions can cause damage to personnel or to the unit.